System information

English
35
Alarm: Motion Detection Conguration
To set the MOTION DETECTION AREA
In the MOTION DETECTION menu, use the mouse or the arrow
buttons to highlight the SETUP button for the channel you
wish to setup the MOTION DETECTION AREA for, and conrm
by pressing select or left clicking.
• You will see a grid of red boxes. The outlined boxes mark
the area that is sensitive to motion. The area without
the red outlines is not sensitive to motion.
• Use the mouse to move the cursor around the screen.
• By pressing select or left clicking an area in the grid, you
can toggle motion detection ON or OFF in that location.
• Areas marked by red boxes will be sensitive to motion,
those not marked will not be.
• Click and drag to select the area you want to select or
deselect.
Sensitivity: The Sensitivity setting is controlled by a slider,
allowing you to set a value between 0 and 50. The lower the
number, the more sensitive the motion detection will be.
Typically, values between 5 and 10 will give good results in the
daytime.
At night, you may get numerous false triggers unless you
raise the sensitivity setting, perhaps as high as 25 - 30. This is
because when cameras (particularly CMOS-based ones) use
active infrared night vision, they dramatically increase the
gain controls to the image sensor. This creates a lot of “noise”
in the camera’s images, which are interpreted by the DVR as
motion.
There are a few steps you can take to minimize the amount of
noise in your images.
• Try adjusting the Image Settings (see “Camera: Display”
on page 20 for details) to ne-tune the brightness and
contrast to get a more stable image.
• Limit the motion sensitive area to only the areas in view
that a target could be. In particular, large featureless areas
in the camera’s view are the ones most likely to give false
triggers - turning o the motion sensitivity to any area
a target cannot move infront of will help reduce false
triggers.
Note: The motion detection feature will seem more sensitive
at night, particularly when using low-light or active infrared
cameras. We recommend that you test your motion detection
sensitivity both during the day and at night to ensure your
sensitivity setting is suitable for either lighting condition.
Notes
Wireless cameras are not recommended for use with the motion
detection.
Motion detection is not recommended for use with PTZ systems.
Avoid enabling motion detection on a channel which has a PTZ
system attached to it - especially when the PTZ system is set to
Cruise Mode.
Setting the motion detection at high sensitivity levels (4 or lower)
increases the frequency of false alarms. On the other hand, low
sensitivity levels (20 or higher) increase the risk that a signicant
motion event (such as an intruder) will not trigger the motion
detection to record.
Check the Motion Detection settings both during the day
and at night. In low-light conditions (or when your cameras
are using infrared night vision) the DVR may be more or less
sensitive to motion, depending on your unique circumstances.
The dierence might be very dramatic!
Image Sensors: CMOS and CCD
There are two kinds of CCTV cameras out there: CMOS and
CCD. Neither technology is inherrently “better” but they’re quite
dierent and you may need to adjust your motion detection
sensitivity to suit the kind of cameras you have.
CCD: A Charged-Coupled Device outputs a clear, stable image. It’s
the best kind of sensor to use with motion detection, and typically
requires lower settings (that is: lower number, more sensitive).
CMOS: A Complementary Metal–Oxide–Semiconductor is a
dierent kind of image sensor, producing bold, vibrant images.
It tends to have more noise than CCD, and typically requires a
higher setting (that is, a higher number, which is less sensitive).
Weather
The weather conditions are going to aect your motion detection.
Dramatic weather phenomenon such as heavy rain, strong
winds, lightning and so on may trigger the motion detection with
surprising frequency.
On the other hand, things like fog, mist and other obscuring
kinds of weather might mask or obscure something moving to
the point that the DVR fails to detect them.